package ooday01;

public class ConsDemo {
    public static void main(String[] args) {

        Student zy= new Student();
        Student kj= new Student("柯洁",26);
        Student cxk=new Student("蔡徐坤",250,"偶像练习生",
                "练习时长两年半");

        zy.sayHi();
        kj.sayHi();
        cxk.sayHi();

    }
}
